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<title> JavaScript: showPages v1.0 [by Lapuasi.com]</title>
<script language="JavaScript">
<!--
/*

showPages v1.1
=================================

Infomation
----------------------
Author : Lapuasi
E-Mail : lapuasi@gmail.com
Web : http://www.lapuasi.com
Date : 2005-11-17


Example
----------------------
var pg = new showPages('pg');
pg.pageCount = 12; //定义总页数(必要)
pg.argName = 'p';    //定义参数名(可选,缺省为page)
pg.printHtml();        //显示页数


Supported in Internet Explorer, Mozilla Firefox
*/

function showPages(name) { //初始化属性
 this.name = name;      //对象名称
 this.page = 1;         //当前页数
 this.pageCount = 1;    //总页数
 this.argName = 'page'; //参数名
 this.showTimes = 1;    //打印次数
}

showPages.prototype.getPage = function(){ //丛url获得当前页数,如果变量重复只获取最后一个
 var args = location.search;
 var reg = new RegExp('[\?&]?' + this.argName + '=([^&]*)[ && #36;]?', 'gi');
 var chk = args.match(reg);
 this.page = RegExp.$1;
}
showPages.prototype.checkPages = function(){ //进行当前页数和总页数的验证
 if (isNaN(parseInt(this.page))) this.page = 1;
 if (isNaN(parseInt(this.pageCount))) this.pageCount = 1;
 if (this.page < 1) this.page = 1;
 if (this.pageCount < 1) this.pageCount = 1;
 if (this.page > this.pageCount) this.page = this.pageCount;
 this.page = parseInt(this.page);
 this.pageCount = parseInt(this.pageCount);
}
showPages.prototype.createHtml = function(mode){ //生成html代码
 var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
 if (mode == '' || typeof(mode) == 'undefined') mode = 0;
 switch (mode) {
  case 0 : //模式1 (页数,首页,前页,后页,尾页)
   strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="number">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page">«</span>';
    strHtml += '<span title="Prev Page">‹</span>';
   } else {
    strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">«</a></span>';
    strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">‹</a></span>';
   }
   for (var i = 1; i <= this.pageCount; i++) {
    if (i > 0) {
     if (i == this.page) {
      strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
     } else {
      strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
     }
    }
   }
   if (nextPage > this.pageCount) {
    strHtml += '<span title="Next Page">›</span>';
    strHtml += '<span title="Last Page">»</span>';
   } else {
    strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">›</a></span>';
    strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">»</a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 1 : //模式1 (10页缩略,首页,前页,后页,尾页)
   strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="number">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page">«</span>';
    strHtml += '<span title="Prev Page">‹</span>';
   } else {
    strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">«</a></span>';
    strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">‹</a></span>';
   }
   if (this.page % 10 ==0) {
    var startPage = this.page - 9;
   } else {
    var startPage = this.page - this.page % 10 + 1;
   }
   if (startPage > 10) strHtml += '<span title="Prev 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage - 1) + ');">...</a></span>';
   for (var i = startPage; i < startPage + 10; i++) {
    if (i > this.pageCount) break;
    if (i == this.page) {
     strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
    } else {
     strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
    }
   }
   if (this.pageCount >= startPage + 10) strHtml += '<span title="Next 10 Pages"><a href="javascript:' + this.name + '.toPage(' + (startPage + 10) + ');">...</a></span>';
   if (nextPage > this.pageCount) {
    strHtml += '<span title="Next Page">›</span>';
    strHtml += '<span title="Last Page">»</span>';
   } else {
    strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">›</a></span>';
    strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">»</a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 2 : //模式2 (前后缩略,页数,首页,前页,后页,尾页)
   strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="number">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page">«</span>';
    strHtml += '<span title="Prev Page">‹</span>';
   } else {
    strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">«</a></span>';
    strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">‹</a></span>';
   }
   if (this.page != 1) strHtml += '<span title="Page 1"><a href="javascript:' + this.name + '.toPage(1);">[1]</a></span>';
   if (this.page >= 5) strHtml += '<span>...</span>';
   if (this.pageCount > this.page + 2) {
    var endPage = this.page + 2;
   } else {
    var endPage = this.pageCount;
   }
   for (var i = this.page - 2; i <= endPage; i++) {
    if (i > 0) {
     if (i == this.page) {
      strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
     } else {
      if (i != 1  &&  i != this.pageCount) {
       strHtml += '<span title="Page ' + i + '"><a href="javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
      }
     }
    }
   }
   if (this.page + 3 < this.pageCount) strHtml += '<span>...</span>';
   if (this.page != this.pageCount) strHtml += '<span title="Page ' + this.pageCount + '"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">[' + this.pageCount + ']</a></span>';
   if (nextPage > this.pageCount) {
    strHtml += '<span title="Next Page">›</span>';
    strHtml += '<span title="Last Page">»</span>';
   } else {
    strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">›</a></span>';
    strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">»</a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 3 : //模式3 (箭头样式,首页,前页,后页,尾页) (only IE)
   strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
   strHtml += '<span class="arrow">';
   if (prevPage < 1) {
    strHtml += '<span title="First Page">9</span>';
    strHtml += '<span title="Prev Page">7</span>';
   } else {
    strHtml += '<span title="First Page"><a href="javascript:' + this.name + '.toPage(1);">9</a></span>';
    strHtml += '<span title="Prev Page"><a href="javascript:' + this.name + '.toPage(' + prevPage + ');">7</a></span>';
   }
   if (nextPage > this.pageCount) {
    strHtml += '<span title="Next Page">8</span>';
    strHtml += '<span title="Last Page">:</span>';
   } else {
    strHtml += '<span title="Next Page"><a href="javascript:' + this.name + '.toPage(' + nextPage + ');">8</a></span>';
    strHtml += '<span title="Last Page"><a href="javascript:' + this.name + '.toPage(' + this.pageCount + ');">:</a></span>';
   }
   strHtml += '</span><br />';
   break;
  case 4 : //模式4 (下拉框)
   if (this.pageCount < 1) {
    strHtml += '<select name="toPage" disabled>';
    strHtml += '<option value="0">No Pages</option>';
   } else {
    var chkSelect;
    strHtml += '<select name="toPage" onchange="' + this.name + '.toPage(this);">';
    for (var i = 1; i <= this.pageCount; i++) {
     if (this.page == i) chkSelect=' selected="selected"';
     else chkSelect='';
     strHtml += '<option value="' + i + '"' + chkSelect + '>Pages: ' + i + ' / ' + this.pageCount + '</option>';
    }
   }
   strHtml += '</select>';
   break;
  case 5 : //模式5 (输入框)
   strHtml += '<span class="input">';
   if (this.pageCount < 1) {
    strHtml += '<input type="text" name="toPage" value="No Pages" class="itext" disabled="disabled">';
    strHtml += '<input type="button" name="go" value="GO" class="ibutton" disabled="disabled"></option>';
   } else {
    strHtml += '<input type="text" value="Input Page:" class="ititle" readonly="readonly">';
    strHtml += '<input type="text" id="pageInput' + this.showTimes + '" value="' + this.page + '" class="itext" title="Input page" onkeypress="return ' + this.name + '.formatInputPage(event);" onfocus="this.select()">';
    strHtml += '<input type="text" value=" / ' + this.pageCount + '" class="icount" readonly="readonly">';
    strHtml += '<input type="button" name="go" value="GO" class="ibutton" onclick="' + this.name + '.toPage(document.getElementById(\'pageInput' + this.showTimes + '\').value);"></option>';
   }
   strHtml += '</span>';
   break;
  default :
   strHtml = 'Javascript showPage Error: not find mode ' + mode;
   break;
 }
 return strHtml;
}
showPages.prototype.createUrl = function (page) { //生成页面跳转url
 if (isNaN(parseInt(page))) page = 1;
 if (page < 1) page = 1;
 if (page > this.pageCount) page = this.pageCount;
 var url = location.protocol + '//' + location.host + location.pathname;
 var args = location.search;
 var reg = new RegExp('([\?&]?)' + this.argName + '=[^&]*[ && #36;]?', 'gi');
 args = args.replace(reg,'$1');
 if (args == '' || args == null) {
  args += '?' + this.argName + '=' + page;
 } else if (args.substr(args.length - 1,1) == '?' || args.substr(args.length - 1,1) == '&') {
   args += this.argName + '=' + page;
 } else {
   args += '&' + this.argName + '=' + page;
 }
 return url + args;
}
showPages.prototype.toPage = function(page){ //页面跳转
 var turnTo = 1;
 if (typeof(page) == 'object') {
  turnTo = page.options[page.selectedIndex].value;
 } else {
  turnTo = page;
 }
 self.location.href = this.createUrl(turnTo);
}
showPages.prototype.printHtml = function(mode){ //显示html代码
 this.getPage();
 this.checkPages();
 this.showTimes += 1;
 document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages"></div>');
 document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml(mode);
 
}
showPages.prototype.formatInputPage = function(e){ //限定输入页数格式
 var ie = navigator.appName=="Microsoft Internet Explorer"?true:false;
 if(!ie) var key = e.which;
 else var key = event.keyCode;
 if (key == 8 || key == 46 || (key >= 48  &&  key <= 57)) return true;
 return false;
}
//-->
</script>
<style>
/* Pages Main Tyle */
.pages {
 color: #000000;
 cursor: default;
 font-size: 10px;
 font-family: Tahoma, Verdana;
 padding: 3px 0px 3px 0px;
}
.pages .count, .pages .number, .pages .arrow {
 color: #000000;
 font-size: 10px;
 background-color: #F7F7F7;
 border: 1px solid #CCCCCC;
}
/* Page and PageCount Style */
.pages .count {
 font-weight: bold;
 border-right: none;
 padding: 2px 10px 1px 10px;
}
/* Mode 0,1,2 Style (Number) */
.pages .number {
 font-weight: normal;
 padding: 2px 10px 1px 10px;
}
.pages .number a, .pages .number span {
 font-size: 10px;
}
.pages .number span {
 color: #999999;
 margin: 0px 3px 0px 3px;
}
.pages .number a {
 color: #000000;
 text-decoration: none;
}
.pages .number a:hover {
 color: #0000ff;
}
/* Mode 3 Style (Arrow) */
.pages .arrow {
 font-weight: normal;
 padding: 0px 5px 0px 5px;
}
.pages .arrow a, .pages .arrow span {
 font-size: 10px;
 font-family: Webdings;
}
.pages .arrow span {
 color: #999999;
 margin: 0px 5px 0px 5px;
}
.pages .arrow a {
 color: #000000;
 text-decoration: none;
}
.pages .arrow a:hover {
 color: #0000ff;
}
/* Mode 4 Style (Select) */
.pages select, .pages input {
 color: #000000;
 font-size: 10px;
 font-family: Tahoma, Verdana;
}
/* Mode 5 Style (Input) */
.pages .input input.ititle, .pages .input input.itext, .pages .input input.icount {
 color: #666666;
 font-weight: bold;
 background-color: #F7F7F7;
 border: 1px solid #CCCCCC;
}
.pages .input input.ititle {
 width: 70px;
 text-align: right;
 border-right: none;
}
.pages .input input.itext {
 width: 25px;
 color: #000000;
 text-align: right;
 border-left: none;
 border-right: none;
}
.pages .input input.icount {
 width: 35px;
 text-align: left;
 border-left: none;
}
.pages .input input.ibutton {
 height: 17px;
 color: #FFFFFF;
 font-weight: bold;
 font-family: Verdana;
 background-color: #999999;
 border: 1px solid #666666;
 padding: 0px 0px 2px 1px;
 margin-left: 2px;
 cursor: hand;
}

/* body */
body {
 font-size: 12px;
}
</style>
</head>

<body>
<script language="JavaScript">
<!--
var pg = new showPages('pg');
pg.pageCount =12;  // 定义总页数(必要)
//pg.argName = 'p';  // 定义参数名(可选,默认为page)

document.write('<br>Show Times: ' + pg.showTimes + ', Mood Default');
pg.printHtml();
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 0');
pg.printHtml(0);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 1');
pg.printHtml(1);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 2');
pg.printHtml(2);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 3 (only IE)');
pg.printHtml(3);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 4');
pg.printHtml(4);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 5');
pg.printHtml(5);
//-->
</script>
</body>
</html>
 